| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 13f - Moist Wasatch Front Footslopes | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 84067 - Roy, UT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 23 | 31 | 37 | 45 | 53 | 60 | 58 | 49 | 38 | 28 | 20 | 38 |
| Avg Max Temp (°F) | 36 | 42 | 52 | 60 | 71 | 82 | 90 | 89 | 78 | 64 | 48 | 37 | 62 |
| Avg Precip (In.) | 2.09 | 1.37 | 2.23 | 1.99 | 2.66 | .78 | .68 | 1.16 | 1.01 | 2.18 | 2.06 | 1.76 | 19.97 |